Eta Photoproduction as a Test of the Extended Chiral Symmetry

C. Fernandez-Ramirez, E. Moya de Guerra, J. M. Udias

We analyze the $\gamma p\to \eta p$ process from threshold up to 1.2 GeV, employing an effective Lagrangian approach that allows for a mixing of eta couplings of pseudoscalar and pseudovect…